Only about 2% of the world population has green eyes.
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The largest breed of rabbit is the Flemish Giant.
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A cow produces around 200,000 glasses of milk in her lifetime.
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Your body is creating and killing about 2.4 million red blood cells per second.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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